ColumnCellRenderer (Starjava TOPCAT API)

java.lang.Object
- uk.ac.starlink.topcat.ColumnCellRenderer

All Implemented Interfaces:

javax.swing.ListCellRenderer
```
public class ColumnCellRenderer
extends java.lang.Object
implements javax.swing.ListCellRenderer
```
List cell renderer which will render StarTableColumn objects sensibly.

Since:

20 Feb 2004

Author:

Mark Taylor (Starlink)

Constructor Summary

Constructors
Constructor	Description
`ColumnCellRenderer()`	Constructs a default renderer.
`ColumnCellRenderer(javax.swing.JComboBox comboBox)`	Sets up a ColumnCellRenderer for a given combo box.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`java.awt.Component`	`getListCellRendererComponent(javax.swing.JList list, java.lang.Object value, int index, boolean isSelected, boolean hasFocus)`
`java.lang.Object`	`mapValue(java.lang.Object value)`	Provides the representation (to be displayed in the combo box) for an object in the box's model.
`void`	`setNullRepresentation(java.lang.Object nullRep)`	Sets the representation for the null item.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ColumnCellRenderer
```
public ColumnCellRenderer(javax.swing.JComboBox comboBox)
```
    Sets up a ColumnCellRenderer for a given combo box. The only use of the combo box is that its tooltip text will be set to that of the description of the selected column (if there is one).
    
    Parameters:
    
    comboBox - box to watch
  - ColumnCellRenderer
```
public ColumnCellRenderer()
```
    Constructs a default renderer.
- Method Detail
  - getListCellRendererComponent
```
public java.awt.Component getListCellRendererComponent(javax.swing.JList list,
                                                       java.lang.Object value,
                                                       int index,
                                                       boolean isSelected,
                                                       boolean hasFocus)
```
    Specified by:
    
    getListCellRendererComponent in interface javax.swing.ListCellRenderer
  - mapValue
```
public java.lang.Object mapValue(java.lang.Object value)
```
    Provides the representation (to be displayed in the combo box) for an object in the box's model.
    
    Parameters:
    
    value - input value
    
    Returns:
    
    to which value is mapped
  - setNullRepresentation
```
public void setNullRepresentation(java.lang.Object nullRep)
```
    Sets the representation for the null item.
    
    Parameters:
    
    nullRep - null representation object to appear in combo box

Class ColumnCellRenderer

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

ColumnCellRenderer

ColumnCellRenderer

Method Detail

getListCellRendererComponent

mapValue

setNullRepresentation